Fluidized bed biological filter assembly for fish tanks

Details Fluidized bed biological filter assembly for fish tanks Fluidized bed biological filter assembly for fish tanks

1996-03-25

1998-01-06

Upton, Christopher

Liquid purification or separation

With gas-liquid surface contact means

210169, 119260, C02F 306

Patent

active

057050570

ABSTRACT:
A fluidized bed biological filtration assembly for use with fish tanks and the assembly has a vertically oriented tubular housing with an elongated upper inner tubular member centrally positioned therein. A top cap covers the top end of the tubular housing and it has a contaminated water inlet port and a filtered water port. The inlet port is in communication with the top end of the inner tubular member and the outlet port is in communication with the filtering chamber formed by the interior of the tubular housing. An inverted cone shaped bottom cap is secured to the bottom end of the tubular housing and its interior has a lower inner tubular member extending upwardly and connected to the bottom of the upper inner tubular member. A plurality of radially extending horizontal slots in the bottom end of the lower inner tubular member allow contaminated water to exit therefrom and pass upwardly through filtering particulate in the bottom of the housing. The flow of the water upwardly through the particulate material produces a fluidized pattern that maximizes filtration.

REFERENCES:
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patent: 4894149 (1990-01-01), Block
patent: 5116489 (1992-05-01), Englert
patent: 5527455 (1996-06-01), Hoffa

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